A peaceful, quiet village nestled in the mountains. An ancient traditional ritual is carried out here—when young women come of age, they undergo a ceremony known as the "Coming-of-Age Sex Rite." Five girls—Michika, Noa, Momoko, Rena, and Mitsuba—dressed in white ceremonial robes, expose their bodies before the village men. Their breasts are bared and groped, their underwear removed, as their pubic hair and genital shapes are inspected. Throughout the process, lewd fluids seep from their crotches, unveiling the deep, hidden charms of womanhood. The purpose of this ritual is to confirm whether the girls, now adult women, are capable of sexual intercourse with men and able to reach climax. Enduring the men's advances, the girls gradually surrender to the atmosphere, leading to the final ceremony: an orgy with the villagers. They carefully take the men's dicks into their mouths, licking and sucking them. As arousal builds, they proceed to penetration. Five girls penetrated at once, thrusting wildly with intense piston movements—an almost dreamlike scene. Reaching climax repeatedly, they receive hot, thick loads of sperm deep inside their vaginas. Creampie after creampie is delivered. In a separate room, a lesbian sex ritual also takes place. Knowing men, knowing women. They practice marital sex, engaging in daily acts of intercourse aimed at conceiving children. Delving into the depths of lovemaking, creampie-filled orgies are repeated. This lust-filled sex ritual is held annually as part of the village tradition. Amid it all, Daiki—the only male in the village reaching adulthood—what thoughts and emotions are stirring within him?